Robert bailey



R. BMLEY.

l S'nov-el Plate'.

No. 90,218;v Patented' May 18, 1869i Witwe/6565 ZwbenZ-or waited ndert @anni tijlre.

ROBERT BAILEY,'OF CLEVELAND, OHIO.

Letters Patent No. 90,218, dated .May 18, 1869.

CENTRE-PLATE FOR COOKING-STOVES.

The Schedule referred to in these Letters Patent and making part of the lame.

To all whom it may concern.-

Vfollowing is a full, clear, and exact description thereof,

reference being had to the accompanying drawings, and the letters of reference marked thereon.

My invention has a twofold object, to wit:

First, to obviate the liability of the removablevaud stationary cross-plates or centre-pieces, in the tops of cooking-stoves and ranges, and plates in their ccmbustion-chambers, to warp and break from the effects of heat; and A Second, to provide for the admission of atmospheric air into the combustion-chamber, to cause the gases to be more eiectually consumed.

These objects I effect by a combination of strengthening-bars, with suitable air-openings on each side or between them, to keep them from becoming highly heated, and at the same time to supply oxygen to the products of combustion, to aidlin the consumption of the gases.

In the accompanying drawings- Figure 1 is a top view of a centre-piece made in pursuance of my invention Figure 2 is a view of the lower side of the same, it being inverted; .and

Figure 3 is a cross-section, in line x x, fig. 1. i

The centre-piece A is cast with two bars a a, in the form ofgrate-bars, on its lower side, extending the greater portion of its length, and with an open slot between them. f

Into this open slot a separate bar, b, is inserted, so

as to leave a narrow slot, c c, on each side of it, and is secured iu its place by bolts or rivets d d d.

The bars a a, and the centre-bar I1, riveted in between them, give great strength to the plate, while the currents of cold air, constantly flowing `in through the slots c c, prevent said bars from becoming highly' heated, and thus obviate the warping of the plate, and, at the saine time, supply oxygen to the combustionchamber, to aid in the consumption of the gases.

It is manifest that the principle of the invention' may be carried into effect by having only one or two bars a a cast with the plate, and a narrow slot or a row of perforations oneach side, onbetween them; or there may be three or more bars cast with the plate, with narrow slots or rows' of perforations between them, or on each side of them; or the centre-bar b, instead of being bolted or riveted in between the bars a a, may be made to rest in steps at each end; but I prefer bolting or riveting it in, as shown in the draw- Witnesses:

T. K. BOLTON, F. L. BALDWIN.

n. BAILEY. 

